Change-Event Level Legend

Level 1

Welch’s t-test p < 0.05

Level 2

Cohen’s d effect-size thresholds: |d| ≤ 0.2 (negligible) , 0.2 < |d| ≤ 0.5 (small) , 0.5 < |d| ≤ 0.8 (medium) , > 0.8 (large)

Level 3

Relative change Δ% thresholds: Δ% < 5.0% (minor) , 5.0% ≤ Δ% < 10.0% (moderate) , ≥ 10.0% (major)

Level 4

Practical significance ΔJ thresholds: ΔJ < 5.0% of median (info) , 5.0% ≤ ΔJ < 10.0% (warning) , ≥ 10.0% (critical)

Level 5

Context tags present file/module annotations for root-cause